Table 7.
Simple effect analysis of the interaction between grade and IA on anxiety among adolescents.
| Variables | df | Mean difference (95%CI) | F | p |
|---|---|---|---|---|
| Anxiety | ||||
| IA WITHIN Grade 7–9 | 1 | 4.771a (4.643, 4.900) | 5306.789 | <0.001 |
| IA WITHIN Grade 10–12 | 1 | 5.328a (5.131, 5.525) | 2812.689 | <0.001 |
| Grade WITHIN NIU | 1 | 1.227b (1.132, 1.322) | 641.891 | <0.001 |
| Grade WITHIN PIU | 1 | 1.783b (1.568, 1.998) | 264.091 | <0.001 |
aMean difference, anxiety score of PIU group–anxiety score of NIU group.
bMean difference, grade 10–12 anxiety score–grade 7–9 anxiety score.